Yea i was planning on implementing a “delta” of sorts.
So right now i’m using this http://inis.jinr.ru/sl/vol1/CMC/Graphics_Gems_1,ed_A.Glassner.pdf , page 304. thats paper page 304, not pdf page. I had some string case at the knots that i had to cull out, but other than that seems to get me in the ball park.
That’s the maths behind… but for infinite straight lines.
Can’t see how you are going to get it.
the one in the .cpp, if i’m reading right, just does 2 dimensional collision.
the 3 dimensional one has been a little trickier. This one works for simple linear 2d lines.
the chance of a “true” 3d bezier spline self intersecting (or being able to find it to 1 or 2 mil) is neigh on impossible hence the 2d “plane projection” approach. probably best to find the “closest points” not adjacent.